There's an interesting moral quandary there, as to whether cooperation with a totalitarian regime helps diminish or consolidate the regime's power, but this daylight savings thing here in the US is throwing me for a loop so I'm going to have to leave that unanswered for now.To be honest (I say this as an European), we have tougher nuts to crack the worrying whether cooperation with China will diminish or consolidate it's power. Our focus is now on defending peace and democracy in Europe (and on a larger scale non-US NATO). To say that China has its issues is an understatement (everyone has), but they are too far away to be a threat short- to midterm. Plus China also values international trade stability. So it would be silly not to look where we can (cautiously) cooperate.
Ideally we would like to continue to work with the US. But the US is less interested in Europe now and that creates a vacuum that will lead to new trade alliances.